Physical Therapy Assistant Practice Exam 2026 - Free PTA Practice Questions and Study Guide

Transparent film dressings are indeed made from transparent polyurethane. This material provides several advantages in wound care, including moisture vapor permeability, which allows for a controlled environment that promotes healing while protecting the wound from external contaminants. The polyurethane film is thin and allows for visibility of the wound, making it easier for both the patient and healthcare provider to monitor healing progress. Additionally, the adhesive properties of this material allow the dressing to adhere securely to the surrounding skin, minimizing the risk of detachment and making it suitable for use in areas of the body that may experience movement.

Other materials mentioned, such as elastic cotton and gauze, do not provide the same level of protection or moisture control. While polyethylene plastic could theoretically offer some barrier properties, it typically does not possess the same breathable characteristics or clarity that polyurethane does, which is crucial for transparent film dressings.